Signal



G. R. MARSICO.

SIGNAL. APPLICATION FILED JUNE 9, 1919. RENEWED AUG. 27,1921- -,.1,,Patented 001. 18, 1921.

Hllllilllll TED STATES PATENT OFFICE.

GERARD Bi MARSICQ,-OF BROOK-LYN, YORK, ASSIGNOR TO PURITON' MANUFAG-TURINGCORPORATION; OF BROOKLYN, NEW"YORK, A"CORPORATION OF NEW YORK.

SIGNAL.

Specification of Letters Patent Patented Oct. 18, 1921'.

Application filedd'nne 9; 1919, Seria1 No. 302,741. Renewed August 27,1921. Serial No. 496,163.

To all whom z'tmay concern:

Be. it. known that I, GERARD R.. MARsIoo,v citizen of: theUnited States,and resident 1918. y p r In my co-pending application above identified,use is made of -a rOtOI (Preferably heavy)- the same having. a clutchsurface on itsinterior surface near 1 the peripherythereof and coacting.clutch devices operatively related to the clutch surface and adapted tobe advanced into drivingv engagement therewith to cause-the rotor -torevolve with great force against the diaphragm or vibratory member, thearrangement of parts beingsuch that effective leverage power is createdand pulsations of high amplitude set upin the vibratory member ordiaphragm. Mechanism isshown for temporarily revolving the clutchdevices with therotor-to give the latter, its necessary impetus and forsubsequently freeing the clutch elements to, permit said rotorvtorevolve byinertia.

In the-form of the inventionto be described hereinafter in fulldetail, Ihave provided acombination of'elements, essen-.

tially consisting of arotor anda mating clutch device, the former havingan annular exterior clutch surfacedirectly at its periphery. Thecoacting clutch device is 'mounted'independently of'the rotor andthesame is designed whereby it" canbe moved radially with relation'to saidexterior surface andre'spectively brought into and out of drivingengagement therewith. Means are alsoincorporatedfin the describedinstrumentalities for causing the clutch device to positively revolvewith the rotor through that period of time which'l find desirable toproduce driving: force for the rotor and permit it' to-operate withgreater efiectiveness' against the diaphragm. The relation f P rtsestablis ed thr gh th s a rangep" plication- Serial No.:24=2,445, filedJ'une 28,=

ment is such that the clutch device is effectively disposed directly atthe periphery of the rotor and when it is advanced against saidperiphery and revolved with the rotor, the force of the latter againstthe diaphragm is appreciably increased over that produced in my formerapplication and sound of greater intensity produced and a higher numberof disturbances communicated to the diaphragm.with the result thatbetter propagation of the sounds created will be present.

Means are also provided for eliminating undue friction between themovable parts of" the structure to enable the rotor to revolve for alonger period of time, spending its entire energy against the diaphragm.

Among other features of novelty which will present themselves as thenature of the invention is better understood, I have resorted to the useof a minimum number of parts and have arranged the same, one withanother so that the cost of manufacture of the device will be greatlyreduced.

The various important features will be particularly pointed outhereinafter in connection with a detailed description of a preferredembodiment of my invention which I' have selected for illustration inthe accompanying drawing, in which similar reference characters indicatecorresponding parts in the several views.

In the drawings,

Figure 1 is a vertical section through the signal, showing parts in fulllines, and,

Fig. 2is a side view of the rotor diagrammatically illustratingdifferent positions of the, clutch device;

Fig. 3 is a side view of the eccentric ring and clutch device and,

Fig. l is a side View of the eccentric disk.

In my co-pending application Serial No. 242,4Ld5, filed June 28, 1918, Ihave described a signal structure wherein means are employed fordisturbing the diaphragm to greater advantage than was possible inmechanically actuated signals heretofore. Through the arrangement ofinstrumentalities as set forth in said applica'tion, I am able tominimize suppression of the rotor by the elimination of undue frictionand thus cause the rotor to spend great force against the diaphragm witha resulting production of a loud note of desirable pitch and intensity.I further intensify the pitch ofthe note by shifting the clutchmechanism of therotor to a point near the periphery theremeasure offorce of the rotor against the diaphragm.

The advantages of the present construction are attained through theprovision of a diaphragm case 5 having a section 6' carrying a resonator7 and diaphragm 8. Mounted to revolve from a supporting bracket 9 Withinsaid case 5 is a shaft 10 carrying an eccentric 11 which consists of adisk 12 fixed to the shaft and a ring 13, encircling the disk andprovided with a'hanger arm 14. This arrangement imparts rectilinearmotion to. the hanger arm when the shaft 10 is revolved.

Loosely mounted on the shaft 10 is a heavy rotor 15 having an annularexterior clutch surface 16 adapted to co-act with a shoe or element 17of the hanger arm 14 and thereby causethe rotor to become fixed to theshaft on one actuation of the eccentric. The inner face of the shoe 17is curved in conformity with the surface 16 of the rotor.

The disk 12 is provided with a groove 18,

the end walls .of which being'designed to co-act with the stop lug 19 onthe ring 13.

The rotor carries a striking surface 20 adapted to engage with an anvil21 on the diaphragm to set up disturbances in the diaphragm when motionis transmitted to the rotor.

On the shaft 10 is mounted a fixed gear wheel 22 which meshes with alarger gear wheel 23' on a'power transmitting shaft24. On the shaft 24is a small gear 25 which intermeshes with a sliding rack bar or plunger26, the latter mounted in a guide member .27. A spring 28 is employed tonormally retain the plunger in a starting position and at the same timeretain the gear train in a fixed position whereby to hold the shaft 10against rotation after power has 4 been transmitted to the rotor.

From the construction described, it follows that when motionis impartedto the plunger to move the same in a downward direction, power will betransferred to the gear train and in turn to the shaft 10 to revolve thelatter in the direction of the arrow 4. Inthese actuations of the partsabove referred to, the eccentric immediately responds to transfer motionto the hanger arm lh causing the'shoe 17 to be advanced into firm clutchcontact with the peripheral surface 16 of the rotor. The rotor thenbecomes fixed to the axle 10 and revolves therewith during the period ofdownward movement' of theplunger 26. The external peripheral contactbetween the rotor and mating clutch'shoe 17, together with the fact thatsuch parts are positioned at a point remote from the center of .therotor gives great leveragejaction and the rotor is made to act withaugmented force against the dia phragm. As the plunger 26 returns to itsnormal orstarting position, the shaft 10 assumes its normal relativelyfixed state, and

the rotor is again set free to permit the entire force thereof to bespent against the diaphragm. The rectilinear motionof the hanger arm 14and the stop means 18 and 19 of the eccentric insures active clutchcontact between the parts to respectively fix and free the rotor andwhen the plunger is returned to said starting position, the shoe 17rests just'lightly against the surface 16. Friction between the rotorand said shoe is negligible. I While I have herein fully shownanddescribed, and have pointed out in the appended claims certain novelfeatures of con struction, arrangement, and operation which characterizemy invention, it will be understood by those skilled in the art thatvarious omissions, substitutions, and changes in the forms,'proportions,sizes, and details of the device; of the materials used, and of theiroperation, may bemade without'departing from my invention.

What I claim as newis: r

1. In a device of the class described. a vibratory member, a rotorcoacting with said member, said rotor being of large diameter and havingan annular. clutch surface remotely situated with respect to thesupportingaxis of said rotor, a driven eccentric, and means operated bysaid eccentric and adapted for driving engagement with said surface torevolve the rotor when motion is transmitted to said eccentric; v

2. In a device of the class described, a vibratory 'member, a rotorcoacting with said member, said, rotor being of large outside diameterand having a smooth annular external clutch surface, a driven eccentric,and means operated by said eccentric and adapted for driving engagementwith said surface to revolve the rotor'when motion is transmitted tosaid eccentric and, including a rocking shoe havinga surface conformingwith the contour of said surface.

3. A device of the class described comprisrotating the hanger for movingthe member ing a diaphragm, a rotor coacting therewith respectively intoand out of engagement to vibrate the same, said rotor being of largewith said surface. diameter and having an exterior smooth Signed atBrooklyn, in the county of 5 clutch surface, a rotating hanger, a memberKings and State of New York, this 20th day carried by the hanger andlocated adjacent of May, A. D. 1919. to the clutch surface, and meansoperable on GERARD R. MARSICO.

